Barometric condenser.



R. D. TOMLINSON.

BAROMETRIC CONDENSER.

APPLIGATION FILED MAY 20, 1910.

Patented Aug". 20, 1912.

ATTORNEY- COLUMBIA PLANOGRAPH cm, WASHINGTON, D. c.

UNITED STATES- PATENT QFFTCE. I

ROYAL D. TOMLINSON, OE MILWAUKEE, WISCONSIN, ASSIGNOB T O ALLIS-CHALMERSCOMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

BAROMETRIC CONDENSER.

Specification of Letters Patent.

Patented Aug. 20, 1912.

To all whom it may concern Be it known that I, ROYAL D. ToMLINsoN, acitizen of the United States, residing at Milwaukee, in the county ofMilwaukee and State of Wisconsin, have invented a certain new and usefulImprovement in Barometric Condensers, (Case A,) of which the followingis a specification.

This invention relates to improvements in the construction ofcondensers, and particularly to improvements in the construction ofcondensers of the barometric type.

The object of the invention is to provide a barometric condenser whichis simple in its construction and efficient in operation.

As heretofore constructed, the construc-' tion of most barometriccondensers has been very complex, and 1t 1s the particular ob ect ofthis lnventlon to provide various 1mprovements in the detailconstruction of.

condensers of this type which will greatly reduce the cost ofconstruction as well as improve the efiiciency of operation.

A clear conception of one embodiment of the invention can be obtained byreferring to the accompanying drawing in which like reference charactersdesignate the same or similar parts in the same or different views.

Figure 1 is a fragmentary elevation of a barometric condenser embodyingthe invention, the condenser head or chamber and the hot well beingshown in section. Fig. 2 is a top view of the condenser head or chamberwhich is shown in section in Fig. 1.

The exhaust steam inlet pipe 1 terminates in the upper portion of thespherical casing 2 of the condenser head, being directed downward andtoward the center of the head, and having its opposite end connected tothe steam supplying source, not shown.-

The condenslng water supply pipe 27 connects with the passage 7 formedat the side of the casing 2, the passage 7 being directed into theannular chamber 14. The chamber 14, which is broad at its base andrestricted at its top, is formed in the upper portion of the casing 2above the diaphragm 6. The overflow pipe 28 connects with a passage 8formed at the side of the casing 2, the passage 8 being directed intothe upper portion of the annular chamber 11. The chamber 11 is formed inthe lower portion of the casing 2 below the diaphragm 6. The overflowpipe 28 extends parallel to the pipe 17 and projects into the hot well19.

The mixing chamber 5 has the upper edge of its walls serrated by aseries of notches 4: and extends downwardly from the upper portion ofthe chamber 14 to the bottom of the casing 2. The wall of the chamber 5contacts with the casing 2 along a horizontal plane 15 and a shortvertical circular surface both at the bottom of the casing 2 and along avertical circular surface 13 of the diaphragm 6. The upper end of themixing chamber 5 is of considerably greater diameter than the bottomthereof, but all diameters of the chamber 5 are less than the internaldiameter of the steam. inlet opening,

thereby permitting withdrawal of the chamber 5 from the upper end of thecasing 2.

The chamber 14 has its communicating passage to the steam inlet reducedor re stricted by the outward spreading of the wall of the chamber 5near the upper end of low the diaphragm 6,these openings 9 establishinga communication between the interior of the chamber 5 and the annularchamber 11. A small downwardly directed opening 10 is formed through theend of the wall of the chamber 5 at the lower extremity of the chamber11. A hook or J-shaped pipe 3 connects the upper end of the chamber 11with the upper interior portion of the chamber 5, the upper end of thepipe 3 being directed toward the, bottom of the lower ends of the pipes17, 28. The overflow or drainage pipe 21 leads away from the well 19 ata point some distance above the lower extremities of the pipes 17 28,but slightly below the top of the wall 20.

During the operation of the condenser, the steam to be condensed isadmitted to the upper end of the casing 2 through the inlet pipe 1,being directed toward the interior of the mixing chamber 5. Thecondenslng water which is admitted to the casing 2 through the pipe 27and opening or passage 7, enters the chamber 14 at its lower portion andrises toward the upper restricted end thereof, being there dischargedinto the interior of the mixing chamber 5 through the notches 4. Thedischarge of the condensing water into the chamber 5 is in the form of aseries of jets or sprays, one at each notch 4 and each directed towardthe center of the chamber 5. The entering steam upon strikand from thechamber 11 down the overflow pipe 28.

Since the velocity of the mixture in passing through the restrictedportion 12 is relatively high, the air which enters the casing 2 isentrained directly down the tail pipe 17, the restricting of the area inthe portion 12 thus serving as an air ejector. Some of the air howevermay become lodged in the upper portion of the chamber 11. This air iswithdrawn from the annular chamber 11 through the pipe 3, which pipeleads from the highest portion of the chamber 11 to the interior of themixing chamber 5.

If it is desired to use a dry air pump in connection with the condenser,the pipe 3 may be omitted and the air pump connection made with theupper portion of the chamber 11. In such construction, air is withdrawnfrom within the mixing chamber 5- through the downwardly inclinedopenings 9, the inclination of these openings tending to cause the airto assume a course of travel in direct opposition to the flow of water,rather than directly against the side of the wall of water passingthrough the chamber 5, thus tending to decrease the amount of waterdrawn into the chamber 11 with the air. Without the use of an air pump,the inclination of the openings 9 tends to reduce the leakage of airinto the chamber 11, since the travel of the water through the mixingchamber is unobstructed by sharp protruding corners on the chamberwalls, which construction would cause eddies or similar obstructingwater currents.

During the inoperativeness of the condenser, some provision should bemade to prevent the freezing of water which may remain in the casing 2.The port or opening 10 at the lower end of the chamber 11 permits thedischarge of any water remaining in the chamber 11 after a shut down ofthe condenser. The water inlet 27 serves a similar purpose in thechamber 14, thus requiring no extra ports or openings through the mixingchamber 5. The opening 10 might also be supplanted by a pipe or similarconnection leading directly from the lower end of the chamber 11 to theoverflow or tail pipes.

The shape of the chamber 14 permits a better spraying or distribution ofthe jets of injection water within the chamber 5, since the velocity ofthe water rising in the annular chamber 14 is increased as it approachesthe restricted portion of the chamber, being a maximum at the dischargeend thereof. The serrated upper edge of the wall of the mixing chamber 5forms a simple and efficient means for spraying the injection water intothe mixing chamber.

The coaction of the mixing chamber 5 with the casing 2, permits easyinsertion of the chamber into the casing. The surfaces 13, 15, arereadily machined, being surfaces of revolution, to insure a tight jointbetween the contacting members. The lower end of the chamber 5 is,moreover, provided with a short circular surface formed perpendicular tothe lower plane surface 15, which surface contacts with a correspondingsurface of the casing 2. By such construction tilting of the chamber 5within the casing 2 is positively prevented, due to the cont-acting ofthe chamber 5 with the casing 2 along two concentric circular surfaces,one of the surfaces; being near the lower end, and the other somedistance above the end of the chamber 5. It is, however, not essentialto have a perfect contact between the short circular surface at thebottom of the wall of the chamber 5 and the casing 2, as it may bedesirable to allow acertain amount of clearance between the members topermit slight relative shifting. This slight clearance would, moreover,prevent sticking of the chamber 5 within the casing 2, thus permittingeasier removal of the chamber wall.

It should be understood that it is not desired to be limited to theexact details of construction shown and described, for obviousmodifications will occur to a person skilled in the art.

It is claimed and desired to secure by Letters Patent,

1. In a condenser, a casing, a mixing chamber within said casing, asecond chamberadjacent said mixing chamber, an overflow pipe leadingfrom said second chamber, a means of communication from the upper end ofsaid second chamber to said mixing chamber, and separate meansconnecting the upper end of said second chamber with said mixingchamber.

2. In a condenser, a casing, an opening into said casing, and a wallwithin said casing forming a mixing chamber, said wall contacting atsurfaces of revolution with said casing near its mid portion and at thebottom and being free from contact at the top, and said wall beingremovable from said casing through said opening.

3. In a condenser, a casing, a wall within said casing forming a mixingchamber, a second chamber for overflow water surrounding said wall, aseparate overflow pipe leading from said chamber, and a port leadingfrom the upper end of said second chamber and downwardly directed tocommunicate with said mixing chamber.

4. In a condenser, a casing, a wall within said casing forming a mixingchamber, a second chamber for overflow water surrounding said wall andcommunicating with said mixing chamber, a separate overflow pipe leadingfrom said chamber, and a drainage port leading from the lower end ofsaid second chamber.

In testimony whereof, I afiix my signature in the presence of twowitnesses.

ROYAL D. TOMLINSON.

Witnesses H. G. CASE, G. F. DE WEIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

